// Get the relative nodes
func (ct *ClusterTopology) GetRelatives() (nodes []*ClusterTopologyNode) {
nodemap := make(map[string]*ClusterTopologyNode, 0)
nodes = make([]*ClusterTopologyNode, 0)
mux.RLock()
defer mux.RUnlock()
for _, nd := range ct.Nodes {
if util.ContainsString(currentNode.Twins, nd.Node.Name) || util.ContainsString(currentNode.Stepbrothers, nd.Node.Name) {
if Active == nd.Node.State {
nodemap[nd.Node.Name] = nd
}
}
}
for _, nd := range nodemap {
nodes = append(nodes, nd)
}
return nodes
}
func (srv *Server) registerServer() {
// update topology
if len(srv.config.Topology.Nodes) > 0 {
// connect first node
for _, node := range srv.config.Topology.Nodes {
if node.Node.Name != srv.config.ServerNode.Node.Name {
if topology, err := srv.outcmdproc.Caller.GetTopology(srv.config.ServerNode.Node.Name, node.Node); err == nil {
srv.config.Topology.Merge(topology)
break
}
}
}
topologies := make([]*cluster.ClusterTopology, 0)
failedNodes := make([]*cluster.ClusterTopologyNode, 0)
for _, node := range srv.config.Topology.Nodes {
if node.Node.Name != srv.config.ServerNode.Node.Name {
if util.ContainsString(srv.config.ServerNode.Stepbrothers, node.Node.Name) && util.ContainsString(srv.config.ServerNode.Twins, node.Node.Name) {
// register this node as twin and stepbrother
if topology, err := srv.outcmdproc.Caller.RegisterTwinAndStepbrother(srv.config.ServerNode, node.Node); err == nil && topology != nil {
log.Printf("Registration was successful on twin and stepbrother node %s\r\n", node.Node.Name)
topologies = append(topologies, topology)
} else {
log.Printf("Registration failed on twin and stepbrother node %s\r\n", node.Node.Name)
failedNodes = append(failedNodes, node)
}
} else if util.ContainsString(srv.config.ServerNode.Stepbrothers, node.Node.Name) {
// register this node on a stepbrother node: the current node became the twin of the stepbrother node
if topology, err := srv.outcmdproc.Caller.RegisterTwin(srv.config.ServerNode, node.Node); err == nil && topology != nil {
log.Printf("Registration was successful on stepbrother node %s\r\n", node.Node.Name)
topologies = append(topologies, topology)
} else {
log.Printf("Registration failed on stepbrother node %s\r\n", node.Node.Name)
failedNodes = append(failedNodes, node)
}
} else if util.ContainsString(srv.config.ServerNode.Twins, node.Node.Name) {
// register this node as a twin node: the node became the stepbrother of the current node
if topology, err := srv.outcmdproc.Caller.RegisterStepbrother(srv.config.ServerNode, node.Node); err == nil && topology != nil {
log.Printf("Registration was successful on twin node %s\r\n", node.Node.Name)
topologies = append(topologies, topology)
} else {
log.Printf("Registration failed on twin node %s\r\n", node.Node.Name)
failedNodes = append(failedNodes, node)
}
} else {
// register node on the cluster
if topology, err := srv.outcmdproc.Caller.RegisterNode(srv.config.ServerNode, node.Node); err == nil && topology != nil {
log.Printf("Registration was successful on node %s\r\n", node.Node.Name)
topologies = append(topologies, topology)
} else {
log.Printf("Registration failed on node %s\r\n", node.Node.Name)
failedNodes = append(failedNodes, node)
}
}
}
}
// remove failed nodes
for _, node := range failedNodes {
srv.config.Topology.RemoveNode(node.Node.Name)
}
// merge
for _, topology := range topologies {
srv.config.Topology.Merge(topology)
}
}
srv.config.WriteTmp()
}